As racial segregation became increasingly institutionalized, the use of black make up became a way to maintain all-white acting companies while still portraying African Americans on film. D.W. Griffith, the director of The Birth of a Nation, for instance, is reported to have forbidden “any ‘black blood’ among the players who might have to touch white actresses. Those actors were always whites in blackface.”
Somerville, Siobhan B.. Queering the Color Line: Race and the Invention of Homosexuality in American Culture. Duke University Press, 2012.
Bamboozled. Directed by Spike Lee, New Line Cinema, 2000.